[Qnr-type quinolone resistance in extended-spectrum beta-lactamase producing enterobacteria in Abidjan, Ivory Coast].
The aim of the study was to show the emergence of the qnr genes in extended spectrum beta-lactamases producing enterobacteria in Abidjan between 2005 and 2006. The whole of 151 strains of extended spectrum beta-lactamases producing enterobacteria were studied: 64 Escherichia coli, 66 Klebsiella pneumoniae, seven Klebsiella oxytoca and 14 Enterobacter spp. isolated from various biological products and from in- and out-patients. The techniques of disks diffusion, double-disk synergy, E-test were respectively used for the antimicrobial susceptibility test, the detection of extended spectrum beta-lactamases and the minimal inhibiting concentration. The bla genes(SHV, TEM, CTXM groups 1, 2, 8, 9), and AmpC were determined by PCR and characterized by sequencing. A global prevalence of 27,2 % (41/151) and rates of 9,9, 14,6, 2,7 % for the qnr genes A, B, A and S were observed. The distribution was 42,9 % for Enterobacter spp, 31,2 % for Escherichia coli, 20,5 % for Klebsiella; 30 strains expressed at least two bla genes; four strains were associated with AmpC. The strains were resistant to the cotrimoxazole (97,6 %), to the céfépime (73,2 %), to the céfoxitine (56,1 %), to the imipénème (0 %) and 43,9 % to all the aminosides. This high qnr gene prevalence associated with several types of bla genes in epidemic matter, the high level of resistance to antibiotics make fear a high risk of the transmission of multi-resistants bacteria and challenge the authorities for a resistance monitoring policy.
Guessennd
N
N
Laboratoire de bactériologie-virologie, institut Pasteur, BP 1563, Abidjan 08, Côte d'Ivoire. guessennd@yahoo.fr
Bremont
S
S
Gbonon
V
V
Kacou-Ndouba
A
A
Ekaza
E
E
Lambert
T
T
Dosso
M
M
Courvalin
P
P
D001426:Bacterial Proteins / Q000032:analysis*; D001826:Body Fluids / Q000382:microbiology; D017714:Community-Acquired Infections / Q000453:epidemiology / Q000382:microbiology; D007560:Cote d'Ivoire / Q000453:epidemiology; D003428:Cross Infection / Q000453:epidemiology / Q000382:microbiology; D004269:DNA, Bacterial / Q000235:genetics; D024901:Drug Resistance, Multiple, Bacterial / Q000235:genetics; D004755:Enterobacteriaceae / Q000145:classification / Q000187:drug effects* / Q000201:enzymology / Q000235:genetics; D004756:Enterobacteriaceae Infections / Q000453:epidemiology / Q000382:microbiology*; D005798:Genes, Bacterial; D006801:Humans; D016133:Polymerase Chain Reaction; D015363:Quinolones / Q000494:pharmacology*; D013045:Species Specificity; D013379:Substrate Specificity; D018440:beta-Lactam Resistance / Q000235:genetics; D001618:beta-Lactamases / Q000032:analysis*
D001426:Bacterial Proteins; D004269:DNA, Bacterial; D015363:Quinolones; D001618:beta-Lactamases